As used in KRS 179.700 to 179.735 unless the context requires otherwise:
(1) "Subdivision" means a group of residential structures or residential lots in an unincorporated part of the county which is served by roads constructed to provide ingress and egress for the residents. Subdivisions may contain nonresidential property so long as the principal nature of the subdivision is residential.
(2) "Subdivision road district" means a district in a county or counties which has been established for the maintenance of public roads which are not state or county roads within that district.